/*******************************************************************************
* Copyright (c) 2006 Sybase, Inc. and others.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Sybase, Inc. - initial API and implementation
*******************************************************************************/
package org.eclipse.jst.pagedesigner.css2.widget;
import org.eclipse.draw2d.Graphics;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jst.pagedesigner.PDPlugin;
import org.eclipse.jst.pagedesigner.css2.ICSSStyle;
import org.eclipse.jst.pagedesigner.css2.provider.DimensionInfo;
import org.eclipse.swt.graphics.Image;
/**
* @author mengbo
*/
public class ImageWidgetProvider extends AbstractWidgetProvider {
private static final String NOPIC_IMAGE_NAME = "PD_nopic.jpg"; //$NON-NLS-1$
private static Image _noPicImage;
private static int _noPicWidth;
private static int _noPicHeight;
/**
* the image
*/
protected Image _image;
/**
* image width
*/
protected int _imageWidth;
/**
* image height
*/
protected int _imageHeight;
/**
* @param image
* @param style
*/
public ImageWidgetProvider(Image image, ICSSStyle style) {
super(style);
// set up image and image width/height
org.eclipse.swt.graphics.Rectangle rect = null;
if (image != null) {
rect = image.getBounds();
if (rect.width <= 0 || rect.height <= 0) {
useNoPicImage();
} else {
_image = image;
_imageWidth = rect.width;
_imageHeight = rect.height;
}
} else {
useNoPicImage();
}
}
/**
*
*/
private void useNoPicImage() {
if (_noPicImage == null || _noPicImage.isDisposed()) {
ImageDescriptor noPicImageDesc = PDPlugin.getDefault()
.getImageDescriptor(NOPIC_IMAGE_NAME);
_noPicImage = noPicImageDesc.createImage();
org.eclipse.swt.graphics.Rectangle rect = _noPicImage.getBounds();
_noPicWidth = rect.width;
_noPicHeight = rect.height;
}
_image = _noPicImage;
_imageWidth = _noPicWidth;
_imageHeight = _noPicHeight;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jst.pagedesigner.css2.provider.ICSSWidgetProvider#getPreferredDimension(int,
* int)
*/
public DimensionInfo getPreferredDimension(int width, int height) {
if (width <= 0 && height <= 0) {
// we are free, so use image size
org.eclipse.swt.graphics.Rectangle a = _image.getBounds();
return new DimensionInfo(a.width, a.height, -1);
} else if (width > 0 && height > 0) {
return new DimensionInfo(width, height, -1);
} else if (height > 0) {
width = (int) ((double) _imageWidth * height / _imageHeight);
return new DimensionInfo(width, height, -1);
} else {
height = (int) ((double) _imageHeight * width / _imageWidth);
return new DimensionInfo(width, height, -1);
}
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jst.pagedesigner.css2.provider.ICSSWidgetProvider#paintFigure(org.eclipse.draw2d.geometry.Rectangle)
*/
public void paintFigure(Graphics g, Rectangle rect) {
if (_image != null) {
g.drawImage(_image, 0, 0, _imageWidth, _imageHeight, rect.x,
rect.y, rect.width, rect.height);
}
}
}